A new power Doppler ultrasound guiding technique for improved testicular sperm extraction.
D001706:Biopsy; D006801:Humans; D008297:Male; D009845:Oligospermia / Q000000981:diagnostic imaging*; D013094:Spermatozoa / Q000166:cytology / Q000473:pathology / Q000502:physiology*; D013737:Testis / Q000098:blood supply / Q000473:pathology / Q000648:ultrastructure*; D020858:Tissue and Organ Harvesting / Q000379:methods; D018608:Ultrasonography, Doppler